Fujifilm's compact Fujinon normal — the 50mm f/2.8 in Leica Thread Mount.
The Fujinon 50mm f/2.8 in Leica Thread Mount is a vintage Japanese screw-mount normal from Fuji's early rangefinder-lens era. It is a compact slower normal made for L39 bodies during the period when Fuji produced lenses for the Leica-thread market, sitting below the faster Fujinon fifties in speed.
It is a manual-focus rangefinder-coupled lens with a 50mm focal length and a maximum aperture of f/2.8. The moderate aperture keeps the optical design simple and the barrel small, and the lens couples to the rangefinder for accurate focusing on screw-mount and adapted bodies.
At 50mm f/2.8 the lens suits street, travel and general daylight shooting where a slim, discreet normal is welcome. Slower normals of this type tend to be sharp and contrasty across the frame at working apertures, with a clean, even look.
As a vintage optic, used copies should be checked for haze, fungus, cleaning marks and coating wear, and the helicoid and aperture tested for smooth, oil-free operation. Verify rangefinder coupling and infinity focus before buying. It adapts to Leica M with an LTM-to-M ring and to mirrorless cameras via an adapter.